Hi,
I have this old H&K Cream Machine which is a bit noisy and hummy:
http://hughesandkettnermicroamps.wee...eam-machine.ht...
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Hughes & Kettner Cream Machine - Noisy
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A Good Pedal PreAmp??
Good day everyone ,
I was looking forward to build myself a nice PreAmp Pedal (mostly for cleans) , and I love the Effectrode TD2A Tube Drive...
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Tube Works RT922 & MV-962
New user coming through!
Anybody got schematics for these tube works rack units? I'm getting desperate here.
I'm having some issues (maybe)...
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6505+ Fault Microphonic squealing / whistling, but stops when a pedal is plugged into front end!
Hi,
I have a 6505+ amp and the Crunch Channel only whistles and howls like an old kettle. The pitch of the whistle changes as the gain knob is altered...
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Ampeg SVP-Pro troubleshooting Need Help
Hello
My Ampeg Preamp SVP-Pro started to distort heavily, so I opened it up I take some voltage measurement.
They are out especially...
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Peavey 5150 Combo Preamp Signal
I have a Peavey 5150 combo amp, 2 x 12, 2 x 6L6, 60 watts, here is the schematic.
A few weeks ago I was measuring bias using the ammeter function...
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Marshall 9004 Rackmount Preamp Negative Voltage Supply
Hi, I have a Marshall 9004 rackmount preamp here (schematic attached) which is not producing sound output, apparently on account of the negative voltage rail...
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Help with circuit: Acoustic guitar preamp based on Fender
I would like to build acoustic guitar preamp based on Fender Acoustasonic circuit.
I got 15V power supply and some TL072, I need one-channel preamp...
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EMG Inspired Preamp PCB
Hello everyone,
I'm working on a project right now with active pickups using an EMG-style preamp and potentially an active tone filter. The circuits...
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Which chip is better for preamp Ad8512, opa2134, or ne5532?
Hi guys, i am working on a preamp project,
Just wanna know which ic is better when it comes to audio/sound performance?
Is there any superiority...
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Matching JFETs for piezo buffer preamp
I want to build the Alex Rice Piezo Preamp (Alex Rice Piezo Preamplifier | Zach Poff (schematic included)), but need to match the JFETs.
I've...
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Problem with microphonic tubes that are brand new.
I just overhauled a vintage Fender Princeton Reverb (not a reissue) that was found in an attic and hadn't been operated in years, and of course replaced all...
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Organ Conversions - Guitar Preamp/Master Vol/ Tone... Help!
Anyone out there got great ideas to convert organ's to guitar amps. Really not interested in re-making one from scratch. Just re-engineering what's needed...
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Grimhol started a topic Balancing outputs from humbuckers with piezo pickups in a semi acoustic guitar.in Guitar TechBalancing outputs from humbuckers with piezo pickups in a semi acoustic guitar.
Ok. *Help needed! *I will try to explain.
I have a semi acoustic guitar that I have built from scratch. *I really struggle with the tech side....
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Bass Help!
First time poster, short time browser.
I've got a carvin bass (dual humbucker) im working on, it has no name on it but i have a serial#....
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Anyone know about this bass preamp circuit wiring diagram?
i bought a new bass. But its electric part is malfuntioning. to fix it, i need a preamp circuit wiring diagram.
unfortunately, i cant...
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Same Prosonic, Different Problem - ocillation/scratching noise on loud low note decay
Working on a Prosonic combo that somewhat intermittantly seems to breakup into ocillation/microphonics coupled with scratchyness at the loudest part of the...
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Active Pickups Anyone?...
Hi all,
haven't posted for a few years, but I've been coming and lurking a bit on and off...
Have any winders around here ever...
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low gain / high gain inputs
Hi. After googling many hours, of course I end up asking here. I'm sure this question was made before but I couldn't get the answer by myself so here I am......
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Pentron Microphone Mixer / Preamp
I found this Pentron MM4 microphone mixer and would like to try using it for recording. It has 4 channels each going through one section of a 12ax7. I thought...